> For the complete documentation index, see [llms.txt](https://atomrigslab.gitbook.io/fortress-arena/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://atomrigslab.gitbook.io/fortress-arena/game-play/main-lobby.md).
# Main Lobby
## Main Lobby Interface Guide
* This guide provides an overview of the Main Lobby Interface, which is your initial point of entry into the game.
1. **Account Profile** : This section displays the user's nickname, account level, and experience. Tapping on this area will open a user profile popup.
2. **Energy** : Energy is a valuable resource that is expended when engaging in stage content. To learn more about energy, refer to the details page. ([View the details page](/fortress-arena/game-play/game-content/stage/rules.md#stage-play-energy))
3. **Cring** : This is the primary currency used in Fortress Arena and can be earned as a reward for playing various in-game content or for staking tanks you own.
4. **Top Menu**
* **Notice** : By clicking this button, (Currently under development.)
* **Setting** : Clicking on this icon will bring up the game settings menu, allowing you to configure your game preferences.
* **Mail** : This icon provides access to the mail system, where you can receive various system messages and notifications.([View the details page](/fortress-arena/game-play/mail.md))
5. **Tank Preset :** This feature displays the NFT tanks that are currently equipped in your preset.
(Left) No preset mounted tank, (Right) with preset mounted tank
* When a preset is an empty slot, you can click on the inventory button to access the inventory.
* You can change the preset displayed on the screen by touching the number buttons on the left.
* You can touch the tank portrait to watch the animation for that tank.
6. **Game Content**
* **STAGE:** Touch the STAGE button to enter the PVE content, STAGE.
([View the details page](/fortress-arena/game-play/game-content/mission.md))
* **MISSION** : Touch the MISSION button to enter the special PVE content, MISSION.
([View the details page](/fortress-arena/game-play/game-content/stage.md))
* **TOURNAMENT :** TOURNAMENT Currently in development.
Press the STAGE button
Press the MISSION button
7. **Bottom Menu**
* **Inventory** : Access the inventory screen by selecting this button. In the inventory, you can manage presets and equip items for your NFT tank. ([View the details page](/fortress-arena/game-play/inventory.md))
* **Rent Income** : Clicking this button will open a Rent Income popup, where you can track the profit generated by staked tanks. ([View the details page](/fortress-arena/game-play/tank-rent-income.md))
* **Shop** : Currently under development.
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